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#1 2019-07-10 07:15:52

From: Allemagne
Registered: 2019-04-02
Posts: 68

Use of the deformation gradient in UMAT

Hello everyone!

I have a question regarding UMAT subroutines. Do you think that a possibility to use the deformation gradient in UMAT in going to be developed some day ? In order to be able to write hyperelastic behaviors in UMAT ?

I wonder why the deformation gradients are not defined in the UMAT interface. Is it because it is too complicated to develop ? Or could I try to develop it ? I'm not really familiar in developing Code_Aster yet so I don't know to what extend we can contribute to development.

Thanks in advance,